Abstract #2679

Initial Experience Using 0.55T MRI for Detection of Liver Metastases in NET Patients

Isabelle Remick¹, Michael Ohliger¹, Cheng Hong¹, Yang Yang¹, Courtney Lawhn Heath¹, Pan Su², Pedro Itriago-Leon², Emily Bergsland³, and Thomas Hope¹

¹Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States, ²Siemens Healthineers, Erlangen, Germany, ³Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, CA, United States

Synopsis

Keywords: Low-Field MRI, Low-Field MRI

Motivation: As assessment of liver metastases requires multiple imaging modalities, it is essential to compare diagnostic capabilities and patient experiences of the low-cost 0.55T MRI to conventional imaging techniques.

Goal(s): We analyzed the sensitivity for neuroendocrine tumor metastases detection of gadoxetate-enhanced 0.55T MRI to ⁶⁸Ga-DOTATATE PET/CT and 3.0T MRI while evaluating patient experience

Approach: Patients were imaged on 0.55T MRI with ⁶⁸Ga-DOTATATE PET/CT and/or 3.0T MRI for comparison. Sound pressure levels (SPLmax) were compared between 0.55T and 3.0T.

Results: Hepatobiliary phase imaging at 0.55T showed increased detection rates over ⁶⁸Ga-DOTATATE PET/CT. SPLmax of 0.55T was significantly lower. Patients found the 0.55T MRI less stressful.

Impact: Routine imaging of patients with neuroendocrine tumor metastases is feasible at 0.55T MRI. Low-field MR imaging has the potential to improve patient experience and accessibility without sacrificing diagnostic capability.

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